Energy Journal June: battery storage as the key to the energy transition
Current developments in the field of battery storage make one thing clear: energy transition will not succeed without powerful storage solutions. The Energy Journal June 2025 devotes two contributions to this central topic – from the XXL energy storage in Ingenbohl to the opportunities of home batteries for private households. We present two excerpts from the publications here and invite you to delve deeper into the content.
Large-scale storage as stability anchor (Article on page 20)
On the subject of power supply, Klemenz Betschart, head of infrastructure at EWS AG, emphasizes: “The future of stable energy supply has eleven letters: storage.” Switzerland’s largest storage battery in Ingenbohl (28 MW) makes a decisive contribution to grid stability and can be fully charged or discharged in one hour. This makes it possible to balance load peaks, temporarily store renewable surpluses and prevent blackouts.
In the planning and realization of this facility, our Managing Director at wattss, Marco Rüegg, was leading with MW-Storage. MW-Storage (now wattss services) develops, finances and builds large-scale storage facilities throughout Europe and has set an important milestone for Switzerland’s energy future with Ingenbohl.
“For the energy transition to succeed, we need storage at all voltage levels, including in industry, commerce and households. For us, only European-made IT and software is used on the grid, especially when it comes to critical infrastructure,” says Marco Rüegg.
Home batteries on the rise (Article on page 22)
In an interview, Swissolar expert David Stickelberger explains that nowadays one in every two new PV systems on a single-family house also comes with a storage directly. This makes it possible to increase the self-consumption of solar power from an average of 30 percent to up to 70 percent. Battery system prices have fallen sharply, the market continues to grow – both for private and industrial applications.
Find out how battery storage in all sizes secures Switzerland’s energy future. The complete June issue of the Energy Journal with in-depth analyses, technical details and market data can be found here as a PDF for download: Bundespublikationen Energiejournal-Juni-2025